【摘要】 简述了地震中观察到的桥梁结构地震碰撞现象,以及已经发展的各种模拟地震碰撞现象的理论分析模型。在此基础上,对桥梁碰撞反应发生机理、碰撞对结构构件抗震能力的影响以及有关防止碰撞发生及防止落梁的有效措施等方面的研究进展进行了回顾和总结。展望了有待进一步研究的问题,包括开展大比例尺的实桥模型地震碰撞试验研究、空间地震动对长跨梁式桥碰撞效应的影响、非规则梁桥的碰撞响应问题以及研究开发切实有效的防落梁措施等。更多还原

【Abstract】 The bridge damage caused by earthquake-induced pounding is reviewed.Various analytical models used to simulate impact effect between bridge decks are presented.Then,research achievements of the seismic pounding responses of bridges are reviewed and summarized from the aspects of the pounding response mechanism of bridges,the influence of pounding on the seismic behavior of structure components and the valid measures for preventing pounding and span collapse.The areas required to further investigate are proposed,including developing experimental studies on seismic pounding of large-scale bridge model,spatial ground motion effect on seismic pounding of long-span girder bridges,seismic pounding problem of irregular girder bridges,and researching and developing the assuredly effective measures for preventing span collapse.更多还原